How to Choose the Right Kennel Divider Size for Your Dog
By Howling Dog Alaska | Published: 2026-10-17
Category: Buying Guides
Learn how to measure your dog for a kennel divider, understand sizing rules, and decide between large and x-large dividers for proper crate training.
Quick answer
Choose a kennel divider that matches your kennel model and allows your dog to stand, turn, and lie down comfortably. For Howling Dog Alaska G3 kennels, the Forever Insert Large fits the large kennel and the Forever Insert X-Large fits the x-large kennel. Measure your dog's length and height, then pick the divider that creates a space just big enough for your dog to stand and turn around.
Why Kennel Divider Size Matters
A properly sized kennel divider turns a full-size crate into a den-like space that supports house training and reduces anxiety. Puppies and dogs that have too much room may use one end as a bathroom, defeating the purpose of crate training. The divider should section off enough space for your dog to stand up, turn around, and lie down—but no more. This encourages the dog to hold its bladder and feel secure.
Kennel dividers are not universal. Each divider is designed for a specific kennel model and size. Using the wrong divider can create gaps, instability, or poor fit. Always confirm your kennel brand and model before purchasing.
How to Measure Your Dog for a Kennel Divider
Start by measuring your dog from the tip of the nose to the base of the tail (length) and from the floor to the top of the head or ears (height). Add 2–4 inches to each measurement to account for movement. The divider should create a compartment that is slightly larger than these adjusted dimensions.
If you have a growing puppy, measure every few weeks and adjust the divider position accordingly. Some dividers, like the Forever Insert, allow incremental adjustment as the puppy grows, so you can expand the space gradually without buying a new divider.
Large vs. X-Large Kennel Dividers
The Forever Insert Large is designed for the large G3 kennel. It is ideal for puppies or small-to-medium adult dogs that will eventually fit comfortably in a large crate. The Forever Insert X-Large fits the x-large G3 kennel and suits larger breeds or puppies that will grow into an x-large crate. Choosing the right base kennel size first is essential—the divider only works within its matching kennel.
If you already own a large G3 kennel and your dog is a medium breed (like a Border Collie or Beagle), the large divider is the right choice. For owners of an x-large kennel with a giant breed puppy (like a Great Dane or Mastiff), the x-large divider provides the room needed during growth stages.
Decision Rules for Kennel Divider Sizing
- Match the kennel model: Only use a divider designed for your specific kennel brand and size. The Forever Insert works exclusively with G3 kennels. Check your kennel's model number before buying. Verify your kennel model first.
- Measure your dog's length and height: Measure from nose to tail base and from floor to top of head. Add 2–4 inches for comfort. The divider should create a compartment slightly larger than these numbers. Use a soft measuring tape and have your dog stand.
- Account for growth: Puppies grow quickly. Choose a divider that adjusts, like the Forever Insert, so you can expand the space over weeks and months without buying a new divider. Adjustable dividers save money long-term.
- Prioritize safety and stability: Ensure the divider locks securely in place and has no sharp edges. The Forever Insert is molded plastic, which is smooth and easy to clean. Inspect the divider for secure fit before each use.
Product Facts
- Forever Insert Large Kennel Divider for Puppies: The Forever Insert is a convenient kennel divider for our large size G3 kennel. This is ideal for puppies making the full-size kennel smaller with the ability to adjust as the pup grows into the kennel. Molded and assembled in the USA. This divider lets you start with a small space for a puppy and expand it over time, so you only buy one divider for the entire puppyhood. The USA molding and assembly also indicate durable construction.
- Forever Insert X-Large Kennel Divider for Puppies: The Forever Insert is a convenient kennel divider for our x-large size G3 kennel. This is ideal for puppies making the full-size kennel smaller with the ability to adjust as the pup grows into the kennel. Molded and assembled in the USA. For owners of x-large kennels, this divider provides the same gradual adjustment for large-breed puppies, preventing the need for multiple dividers as the dog grows.
Which Divider Should You Choose?
Best for
- Puppies and small-to-medium adult dogs that will live in a large G3 kennel (Forever Insert Large)
- Large-breed puppies and adult dogs that need an x-large G3 kennel (Forever Insert X-Large)
Not for
- Kennels other than the G3 series by Howling Dog Alaska
- Dogs that already fit perfectly in their crate without a divider
